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<div class="titlepage"><div><div><h4 class="title">
<a name="asio.reference.ip__icmp.resolver"></a><a class="link" href="resolver.html" title="ip::icmp::resolver">ip::icmp::resolver</a>
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<p>
          <a class="indexterm" name="asio.indexterm.ip__icmp.resolver"></a> 
The ICMP resolver type.
        </p>
<pre class="programlisting">typedef basic_resolver&lt; icmp &gt; resolver;
</pre>
<h6>
<a name="asio.reference.ip__icmp.resolver.h0"></a>
          <span><a name="asio.reference.ip__icmp.resolver.types"></a></span><a class="link" href="resolver.html#asio.reference.ip__icmp.resolver.types">Types</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/endpoint_type.html" title="ip::basic_resolver::endpoint_type"><span class="bold"><strong>endpoint_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The endpoint type.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/executor_type.html" title="ip::basic_resolver::executor_type"><span class="bold"><strong>executor_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The type of the executor associated with the object.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/flags.html" title="ip::basic_resolver::flags"><span class="bold"><strong>flags</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    A bitmask type (C++ Std [lib.bitmask.types]).
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/iterator.html" title="ip::basic_resolver::iterator"><span class="bold"><strong>iterator</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    (Deprecated.) The iterator type.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/protocol_type.html" title="ip::basic_resolver::protocol_type"><span class="bold"><strong>protocol_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The protocol type.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/query.html" title="ip::basic_resolver::query"><span class="bold"><strong>query</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    (Deprecated.) The query type.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/results_type.html" title="ip::basic_resolver::results_type"><span class="bold"><strong>results_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The results type.
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<h6>
<a name="asio.reference.ip__icmp.resolver.h1"></a>
          <span><a name="asio.reference.ip__icmp.resolver.member_functions"></a></span><a class="link" href="resolver.html#asio.reference.ip__icmp.resolver.member_functions">Member
          Functions</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/async_resolve.html" title="ip::basic_resolver::async_resolve"><span class="bold"><strong>async_resolve</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    (Deprecated: Use overload with separate host and service parameters.)
                    Asynchronously perform forward resolution of a query to a list
                    of entries. <br> <span class="silver"> &#8212;</span><br> Asynchronously perform forward resolution
                    of a query to a list of entries. <br> <span class="silver"> &#8212;</span><br> Asynchronously
                    perform reverse resolution of an endpoint to a list of entries.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/basic_resolver.html" title="ip::basic_resolver::basic_resolver"><span class="bold"><strong>basic_resolver</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Constructor. <br> <span class="silver"> &#8212;</span><br> Move-construct a basic_resolver from
                    another.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/cancel.html" title="ip::basic_resolver::cancel"><span class="bold"><strong>cancel</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Cancel any asynchronous operations that are waiting on the resolver.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/get_executor.html" title="ip::basic_resolver::get_executor"><span class="bold"><strong>get_executor</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Get the executor associated with the object.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/get_io_context.html" title="ip::basic_resolver::get_io_context"><span class="bold"><strong>get_io_context</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    (Deprecated: Use get_executor().) Get the io_context associated
                    with the object.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/get_io_service.html" title="ip::basic_resolver::get_io_service"><span class="bold"><strong>get_io_service</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    (Deprecated: Use get_executor().) Get the io_context associated
                    with the object.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/operator_eq_.html" title="ip::basic_resolver::operator="><span class="bold"><strong>operator=</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Move-assign a basic_resolver from another.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/resolve.html" title="ip::basic_resolver::resolve"><span class="bold"><strong>resolve</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    (Deprecated: Use overload with separate host and service parameters.)
                    Perform forward resolution of a query to a list of entries.
                    <br> <span class="silver"> &#8212;</span><br> Perform forward resolution of a query to a list
                    of entries. <br> <span class="silver"> &#8212;</span><br> Perform reverse resolution of an endpoint
                    to a list of entries.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/_basic_resolver.html" title="ip::basic_resolver::~basic_resolver"><span class="bold"><strong>~basic_resolver</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Destroys the resolver.
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<h6>
<a name="asio.reference.ip__icmp.resolver.h2"></a>
          <span><a name="asio.reference.ip__icmp.resolver.data_members"></a></span><a class="link" href="resolver.html#asio.reference.ip__icmp.resolver.data_members">Data
          Members</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/address_configured.html" title="ip::basic_resolver::address_configured"><span class="bold"><strong>address_configured</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Only return IPv4 addresses if a non-loopback IPv4 address is
                    configured for the system. Only return IPv6 addresses if a non-loopback
                    IPv6 address is configured for the system.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/all_matching.html" title="ip::basic_resolver::all_matching"><span class="bold"><strong>all_matching</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    If used with v4_mapped, return all matching IPv6 and IPv4 addresses.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/canonical_name.html" title="ip::basic_resolver::canonical_name"><span class="bold"><strong>canonical_name</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Determine the canonical name of the host specified in the query.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/numeric_host.html" title="ip::basic_resolver::numeric_host"><span class="bold"><strong>numeric_host</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Host name should be treated as a numeric string defining an IPv4
                    or IPv6 address and no name resolution should be attempted.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/numeric_service.html" title="ip::basic_resolver::numeric_service"><span class="bold"><strong>numeric_service</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Service name should be treated as a numeric string defining a
                    port number and no name resolution should be attempted.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/passive.html" title="ip::basic_resolver::passive"><span class="bold"><strong>passive</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Indicate that returned endpoint is intended for use as a locally
                    bound socket endpoint.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../ip__basic_resolver/v4_mapped.html" title="ip::basic_resolver::v4_mapped"><span class="bold"><strong>v4_mapped</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    If the query protocol family is specified as IPv6, return IPv4-mapped
                    IPv6 addresses on finding no IPv6 addresses.
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<p>
          The <a class="link" href="../ip__basic_resolver.html" title="ip::basic_resolver"><code class="computeroutput">ip::basic_resolver</code></a>
          class template provides the ability to resolve a query to a list of endpoints.
        </p>
<h6>
<a name="asio.reference.ip__icmp.resolver.h3"></a>
          <span><a name="asio.reference.ip__icmp.resolver.thread_safety"></a></span><a class="link" href="resolver.html#asio.reference.ip__icmp.resolver.thread_safety">Thread
          Safety</a>
        </h6>
<p>
          <span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></span> Safe.
        </p>
<p>
          <span class="emphasis"><em>Shared</em></span> <span class="emphasis"><em>objects:</em></span> Unsafe.
        </p>
<h6>
<a name="asio.reference.ip__icmp.resolver.h4"></a>
          <span><a name="asio.reference.ip__icmp.resolver.requirements"></a></span><a class="link" href="resolver.html#asio.reference.ip__icmp.resolver.requirements">Requirements</a>
        </h6>
<p>
          <span class="emphasis"><em>Header: </em></span><code class="literal">asio/ip/icmp.hpp</code>
        </p>
<p>
          <span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
        </p>
</div>
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<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2018 Christopher M. Kohlhoff<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></td>
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